/Engine/Source/Runtime/Engine/Public/Rendering/SkeletalMeshLODImporterData.h
Copy only unnecessary array data from the structure to build the morph target (this will save a lot of memory)
void CopyDataNeedByMorphTargetImport ( [FSkeletalMeshImportData](API\Runtime\Engine\Rendering\FSkeletalMeshImportData) & Other ) const